# mooSound 犢出聲 vs Nowbook知書閱聽圖書館

The clearest difference is iOS requirement: Nowbook知書閱聽圖書館 at 12.0 against mooSound 犢出聲's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

mooSound 犢出聲 ships an update monthly, Nowbook知書閱聽圖書館 every 5 weeks. The most recent releases landed on August 12, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | mooSound 犢出聲 | Nowbook知書閱聽圖書館 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (16 ratings)](https://appshunter.io/ios/app/moosound/id1630868483/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | Free | — |
| Size | 82 MB | 132 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [eCrowdmedia](https://appshunter.io/developer/942389747) | [SUEP](https://appshunter.io/developer/660144353) |

## What reviewers say

### mooSound 犢出聲

[App page](https://appshunter.io/ios/app/moosound/id1630868483)

Listen to audiobooks hands-free and utilize your spare time. This app offers customizable playback options like speed, skip intervals, and download settings. It also includes bookmarking and a driving mode with large buttons.

**Highlights:** On-demand playback, Customizable download settings, Adjustable playback speed, Customizable skip intervals, Bookmark functionality, Driving mode with large buttons

**Features:** Siri integration

**In-app purchases:** none


### Nowbook知書閱聽圖書館

[App page](https://appshunter.io/ios/app/nowbook/id6443480831)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is mooSound 犢出聲 free?

mooSound 犢出聲 is free to download, with no in-app purchases.

### Is Nowbook知書閱聽圖書館 free?

Nowbook知書閱聽圖書館 is free to download, with no in-app purchases.

### Do mooSound 犢出聲 or Nowbook知書閱聽圖書館 have ads?

Neither mooSound 犢出聲 nor Nowbook知書閱聽圖書館 shows ads.

### Which is updated more often, mooSound 犢出聲 or Nowbook知書閱聽圖書館?

mooSound 犢出聲 ships an update monthly, and Nowbook知書閱聽圖書館 every 5 weeks. Most recently, mooSound 犢出聲 was updated on August 12, 2026 and Nowbook知書閱聽圖書館 on September 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*